Machine tool



Dec. 12, 1944., w. HQHENDEL MACHINE TOOL Filed Sept. 25, 1942 3 Sheets-Sheet l 3 a 3 1 M LL .2. J fir I m M/Wd W i 3 3 H w a .N& AL NM. 6% w W 1 W WW Dec. 12, 1944. w HENDEL 2,364,977

MACHINE TOOL Filed Sept 25, 1942 5 Sheets-Sheet 2 v "I"? '2 A P 53 4 $8 26 41 F g- 42 I v Wflh am H Hench}.

Dec. 12, 1944. w. H. HENDEL MACHINE TOOL Filed Sept. 25, 1942 3 Sheets-Sheet 3 jnuanhw v William H.Hem&e1 g3,

Patented Dec. 12, 1944 UNITED STATES PATENT OFFICE MACHINE TOOL William H. Hendel, Minneapolis, Minn. Application September 25, 1942, Serial No. 459.673

20 Claims.

An object of the invention resides in providing a machine tool in which both curved and straight cuts may be successively made on the work.

A feature of the invention resides in providing a machine tool in which relative transverse movement between the Work and tool is procured to form various contours consistin of curves and straight lines.

A still further object of the invention resides in providing a machine tool in which curves may be formed on the work without the use of tomplets or forms on which the outline of the surface of the work is originally made.

Another object of the invention resides in providing a machine tool having a work support and a tool support arranged for relative longitudinal and transverse movement and in providing a link pivoted to one of said supports and procuring relative arcuate movement between the supports upon longitudinal relative movement between the supports.

A still further object of the invention resides in providing a second link pivotally connected to the first link and adapted to cause relative arcuate movement between the supports and of a different curvature than that produced by the first link.

An object of the invention resides in providing locking means for holding the parts from predetermined relative movement to procure other predetermined relative movement between the supports.

Other objects of the invention reside in the novel combination and arrangement of parts and in the details of construction hereinafter illustrated and/or described. 1

In the drawings:

Fig. l is a fragmentary plan view of a machine tool illustratin an embodiment of my invention.

Fig. 2 is 'a view similar to Fig. 1 of a portion of the structure shown therein and illustrating the parts in altered position.

Fig. 3 is a. view similar to Fig. 2 showing the parts in still different position.

Fig. 4 is a rear elevational view of a portion of the structure shown in Fig. 1.

Fig. 5 is a fragmentary elevational sectional view taken on line 5 -5 of Fig. 1 and drawn to a greaterscale. I

Fig. 6 is a longitudinal sectional view of the work being worked on by the machine.

Fig. 7 is a transverse fragmentary sectional view taken on line of Fig. 4 and drawn to a greater scale.

In the construction of dies and similar devices, itbecomes desirable to construct the same with surfaces of varying contour and frequently such surface may be formed by arcuate curves connected by cylindrical surfaces.- The present invention provides a machine tool in which such surfaces may be automatically formed to great precision without the use of templets or similar devices.

For the purpose of illustrating my invention, I have shown in the drawings an ordinary screwcutting lathe which is indicated in its entirety by the reference letter A. It will, however, be readily comprehended that the invention may be used with grinders or other types of machine tools now suitable for the purpose and that the adaptation shown is merely for the purpose of illustration.

The lathe Aconsists of a lathe bed l2 having four ways l3, M, l5 and [6 formed thereon. A head stock H is also employed which is mounted on the ways l4 and I5. This head stock includes two bearings l8 and I9 which rotatably support a spindle 2| which is illustrated as having attached to it a scroll chuck 22 for the purpose of supporting the work to be machined. The spindle 2| is driven through a cone pulley 23 which may be backgeared or directly connected to the spindle 2! by means of construction now well known in the art and not shown in detail in the drawings.

Slidably' mounted on the ways I 3 and I6 is a carriage 20 which has asaddle 24 gibbed to the bed I 2 inthe customary manner. This saddle is constructed with a longitudinally extending rear member 25 which rests on the way It and of a bolt 35 is a grinder 36 which consists of a rest base 32 adapted to swivel' about a. pivot not shown. This rest base is formed with a guide 33 which slidably supports the compound rest 34.

Attached to the compound rest 34 by means spindle 31 rotatably mounted in a bearing 38.

Spindle 31 has attached to it a pulley 39 which is driven from an electric motor 4| by means of a belt 42. Belt 42 passes over the pulley 39 and over another pulley amounted: on the motor. shaft 44. The bearing'38 and the motor 4| are both supported on the compound rest 34 and are jointly movable with it. Mounted on the" end of the spindle 3'! is a chuck 45 in WhiChfiiS a secured a shank 45 carrying a grinding wheel 1 41. This wheel serves to machine'the work;-' which, in the instant case, Q-is illustratedtas -;a die 48 which is held between the jaws of the chuck 22. The cross feed screw for the'cross slide .29,is .removeddn.the.-adaptation ofnthe in.- vention to the lathd..whi1e1'the.eompound;. restw feed. screw. 5| is ..usedsto;move. the .compound rest to procure depth-mfcutm.

Thedie..48.Wh-ich is a. specimenbf the kind. of work, adapted to be .machined byrmys invention is best shown in Fig. 6. This die is inthanature ofan objectof-revolution.havinga borer! H ex.- tending therethrough...rThishborehasea cy1in'dri' ca-lsurface at. thegoutermostendindicated .at .l -l 2 whichis connected .t'oa curved surf-ace H 3; sfIhe surface I I3 joins with another curvedsurface 1J4 forming therewith a reversecurve. ;,.The surface I I 4 is tangent. toma nylindrical. suriace I. I 5 loft lessen diametenthanlthersuriace .H 2.

The, invention, proper includes two 1inks,..52,'and 5 53...;Ihelink 521s pivotedbyameans of a studlfilg to the; .cross=slidel.-'29.;.i .This. linlctextendsfl..rear.-;.; wardly.of.thelcrossrslide'andoverlies.a plate 55.1.. Plate, '55Jis iproyided, with. .a flange-. 56 whichhis .l I attached to the end of the cross slidteldhylneansAO. of .screws5'l... ,Thet-linki52ais piyotedtb the link i 53 .by; means ofia flangedbushingrflrwhichHex? tends Jointly througlrithe ends ;of both; of the. .l links..52..and-,53, best shown. in Fig.5. lThelplinkn 53 .is pivoted to rantarm 59..by;means.of .a similar .45 bushing ,6 I which;extends..iointly. through,.said.v arts;v .The .arm. .59.;extends outwardly from1.a slidingmounting .fifwhichfl is slidably mounted on the two ways l4 and I5 and whichisfgiblded-a. to the .bed l2 in the-same mannenas .the'carriage 0 20. The.mountinglfiljmayrrnoverlongitudinally of the' bed. I 2 .but .th'elsaid Lmounting and themarm .1 59 will be restrainedfrom transverse movementby means of .theuway L4. I

The links. 52I'and.53.may baloc'ked together the same .may belocked ato .theplate 5.5..5-11This'is accomplished by the-construction.bestrshown. Figs. 1 and ,5. Extending upwardly tromthelinka 53intermediate the endsithereofis an upright. ,1 to which. is pivoteda' locking -.l ev"er 6.4.1; Lever :54 too has pivoted. to ,thaendsthereof .;two.-plungers .65... and Which are slidableinlthetworboreseofrthen bushings ,BI .and 58..r.Th .Tplungersfi5gandfi6n'fit snugly .lwith-iii .the bores of the saidaliushing. but. are. loosely connectedto...the;,.lever ;54, so: that $65 swinging movement of said levenwillcause ,par-..- allel, vertical, 'reciprocationabhthe plungers..in.. opposite directions, The. plunger.;65lis.ada.pted. to enter a hole 6! inthellink 521and .upon further. movement, to enter either-of two. holes li8iandl7o 69 inthe'plate :5:Pluhger, is similatlyadapted to enter a hole-'ll'finfthe' plate 55. .Wlienthe'. lever64is swung in one direction;. the .links352i an-d'53maybeilockedtogether and.when swung.v f urtherin "the same direction; thelccked links .7

may be locked relative to the plate 55 in either of the two positions determined by the holes 68 and 69. Similarly, when the lever 64 is rocked in the other direction, the link 52 will become disengaged from the link 53 and the said link 52 locked to the plate 55 through the hole H.

For swinging the lever 54, another lever 12 is employed which extends along the arm 59. This lever is pivoted at I3 to a lug 14 formed on the mounting 62. Lever 12, at its outermost end, is pivoted to an extension Informed on the plunger 65. Said lever is held in position on the extension 10o)? said plunger 65 by means of two nuts 15 and I6 which are screwed thereon and which hold the lever 12 in adjusted position. A knob 80, screwed on -the end oi -extension 10, serves 'as a lock nut forrt-henut 15. ..When.the lever 12 is swung about its pivot 13, the plunger 65 is raised and lowered and-the=1ever 64 swung accordingly. The lever 12.is ,urged. into its downward position by means of. a compression coil spring. IT." This spring is seated on the upper surfaceof the lever and is further seatedagainst the head 18' of a screw 19. The .screw l9fpasses through, the lever Hand is threaded .intolthe arm 59of the mounting 62;"

For moving the lever 12, the construction shown inmFighfl is employedQPii/otedto the lathe Jbed' I2'by.means ofra' stud.8l .is a swinging arm"82. Tlifsiarm hasformed init a horizontally'extend-; ing slot 83."A plunger 84 is pivoted to the lever" 12 by. means of a pintle 85 and .extendsdowm' wardlylthr'ougha guide ,BBsecured to the mount ingjZQTTh''saidplunger has a pin 8Tonit which is slidably mounted in th'e'slot 83. Upon swinging of thewarm. 82, .the plunger. 84.. is raised and lowered, causing a, corresponding swinging'oi the lever 12111Thelarm 82 has attached to it. aibr'acket" 88.. Twhich/iprojects outwardly therefrom. 1 This bracket has secured to it a leaf spring 89"which extends inthe .directionbf extentoi the. arm 82"" and. .when ,unsprung, ,lies substantially parallel withlit; This spring has mounted on the endof "i it a camiollowerfil which is adapted toengage' a cam 92'. Cain,9,2"is secured by means of screws 93 to a bracket ,94which is attached to'therear member 251 or the saddle 24' of carriage 20" by. means of screws 95.:"I'l1'ecam follower 9| is offset with reference to the spring 89which clears the,

cam 92Tand permitslthe' said follower vtotengage thelvarious cam surfaces thereof. The cam-92" is formed with'an upper camsurface 91', a lower cam surface 98' and two oblique end camsurfaces 99 and IL.

The mountingtfzfmay'bel held in locked'p'ositionwith'reference to the .bed'l2 bymeans. of the arm'82I"'Foithis purpose, a latch lug I03 is em-' ployed whichis attached to 'said'mounting and which extends 'over the upper'edge'of thearrrr.

82.. .In this.arm.are formed two notches I04"and ;;The' notch movement. of the said mounting.

Inthemovement of the cross-slide and linkage the wedge I08l"to the-bed l2. These wedges act when the; carriage is moved in its 'extreniepositionaway fromthe work and prior to engagement of the grinding wheel with the work.

The operation of the-invention .is as follows;.

The die 48 is first rough machined, as by a reamer,

I04 is .relatively" narrow and snugly, receives the'latch lug. I03 "and holds the mounting 52 from movement 'ineith'er direction: Tli''notch I05"'is somewhat wider and limits the" and then hardened and tempered. The die so formed is then inserted in the chuck 22 and clamped in position by the jaws 49 thereof. At the beginning of the machining operation, the parts are arranged as shown in Fig. l and Fig. 4, with the grinding wheel 4'! just about to enter the bore III of the die 48.

The latch lug I03 rides upon the upper edge or surface I66 of the arm 82 between the two notches H14 and I05. Ann 82 is urged into engagement with this latch lug by means of the spring 89 which is flexed, due to the follower 9| resting upon the cam 92. This spring is sufficiently stiff to overcome the action of spring Tl which urges the parts in the opposite direction.

With the parts so arranged, the plunger 04 is in its lowermost position. When in such position, the plunger 65 extends through both the links 52 and 53 into the hole 68 in the plate 55, while the lower end of the plunger 66 is in a midway position within the bushing 50. This prevents relative movement between the cross slide 23 and the mounting 62, both in a longitudinal and transverse direction. Upon setting the lathe and the grinder in motion, the carriage 20 may now be moved toward the chuck 22, either manually or by means of the lathe lead screw, the mounting 62 traveling with it. The longitudinal movement of the carriage 20 causes the grinding wheel 67 to enter the work and cut the cylindrical portion I I2 of the bore III. Throughout this movement, the latch lug l03 rides upon the upper surface 06 of the arm 82. When the latch lug I03 is received within the notch I04, the arm 82,

through the action of spring 89 is raised and the i plunger 94 moved upwardly. This movement terminates before the latch lug I03 reaches the bottom of the notch I04, Such movement is terminated by the end of the plunger 66 striking the plate 55. The plunger 65 is now free from the plate 55, but is still engaged within the hole 61 of link 52, locking the two links 52 and 53 togeth-,

er. As the carriage 26 continues its longitudinal movement, the mounting 62 now being latched relative to the bed l2, causes the linkage to swing about the bushing 6| as a pivot. Link 52, being pivoted to the cross slide 29, forces the cross slide to move with it. The carriage and the linkage hence move from the position shown in Fig. l to that shown in Fig. 2. Such movement causes arcuate movement between the grinding wheel 4! and the work, and the curved portion 3 of bore II is cut. During such movement, the spring 89 exerts an upward pressure on the arm 32, plunger 84 and lever I2 which tends to urge the plunger 66 downwardly. When plunger 66 reaches hole ii, the same drops into this hole and locks the link 52 from movement relative to the plate 55. During such movement, the latch I03 reaches the bottom of the notch I04. At the same time, the plunger 65 is raised sufiiciently to clear the link 52, permitting relative movement between the two links; Continued longitudinal movement of the carriage now causes the link 53 to swing about the bushing 6| as a pivot, the said link being momentarily pivoted to the plate 55 through the hole II and the plunger 66 received therein. The grinding wheel 41 now makes a reverse curve and cuts the portion N4 of the bore ill. During such movement of the carriage, the carriage and the linkage move relative to one another from the position shown in Fig. 2 to that shown in Fig. 3. At the end of the curved portion 4 of the bore III, the follower 9| passes the end of the surface 91 of cam 92 and through til now free to act, now forces the lever I2 downwardly, which lowers the plunger 65 and raises the plunger 66. The plunger 65 passes through a hole in the link 52 similar to the hole 61, not

shown, and into a hole 69 in the plate 55. At the same time, the plunger 66 is disengaged from the hole II. This again locks the mounting 62 and the cross slide 29 from both longitudinal and transverse relative movement. Upon the follower 9| dropping off from the cam 92, the latch lug I03 is freed fromthe notch I04 and the mounting 62 is again free to travel with the carriage. During such movement, the cylindrical portion N5 of the bore III is out. It will thus be seen that continuous movement of the carriage 20 toward the chuck 22 produces successively the various cuts forming the bore of the die, without manipulating the cross-slide. In this manner, the change from one curve to the other is made automatically and instantly, at the proper time, so that the finished cut is smooth and without ridges at the changes of curvature.

When the out has been completed, the grinding wheel 41 is released from the work through the feed screw 5| and the carriage 20 manually moved in a direction away from the work. Such movement is continued until the follower 9| passes beneath the surfaces 99 and 90 of the cam 92. After the follower 9| has cleared the cam 92, the return movement of the carriage is continued. At the same time, knob on plunger 65 is raised manually a sufiicient distance to disengage plunger 65 from hole 69 and from link 52. 'Such movement, of course, causes plunger 60 to engage hole II and also causes latch lug I03 to enter the notch I05, thus locking the mounting 62 from reverse movement. Continued reverse movement of the carriage causes the linkage to move back to position similar to that shown in Fig. 2. As soon as the linkage has commenced to move so that the plunger 65 has cleared the hole in link 52 in which it was engaged, knob 80 is released and plunger 65 urged downwardly by the spring 11. When the carriage reaches a position in which the links 52 and 53 are again in alignment similar to their position in Fig. 2, the plunger 65 drops into hole 61 in link 52 and rides upon the surface of the plate 55. This disengages the plunger 66 from engagement with hole 1| and the links may move in unison until they occupy a position similar to'that shown in Fig. 1. During such movement, the latch I03 still remains in engagement with lever 82 at notch 05, said lever having moved half way down. Reverse movement of the carriage is still continued. When the plunger 65 reaches hole 68, the pressure from spring 1"! causes said plunger to enter said hole and the linkage then is arranged similar to the arrangement shown in Fig. 1. Further rearward movement of the carriage causes the wedge I01 to engage the wedge I08 and to take up the slack in the linkage. 'Ihe carriage 20 is then moved toward the work. This causes the follower 9| to engage the surface |0| of cam 92 and to travel up said surface and on to the surface 91. When the carriage reaches its starting position, as shown in Fig. 1, the latch lug I03 engages the upper surface I06 of arm 82 and holds the parts in proper position. The grinding wheel 4'! is next moved into contact with the work through the feed screw device is ready to take another cut.

'The advantages of my invention are manifest. The human element does not enter into the forthe action of spring 89, drops; Spring 11, being 5| and the longitudinal.movementrelative to thebechawork:v

I operations: My inventionmay-be appliedsto existingilathes..-.or grinders without material..change thereof-:1. Thai-invention may ebe built at a minimumr-ex-pensew.With.my invention, highly. ac! curate results-are produced. 1 l5 Changes .-in-=the...speoific-.-.form of my..-invention, as..:herein; described maya be "made-within; the scope, ofwhat. is claimed: without. departing from theespirit. of .my invention. 1

Havingz described mysinventiomwhattl claim- 20 as new and. desire :to protect-by .LettersPatent is Inacombinatioma bed a carriages longitu-w dinal guide means; for-guiding. said =carriagesfor longitudinal movement relative to thebed; a work support,-:a tool support-,-.- one of saidsupports'be-wzlo ingtoarsied by the-.carriageg and the other of said supports beingv garried by. the shed; 'transverse guide meansvforguidingonezof said supportsiforl transverse'rmovement.relative to the other sup- Dort; a linkg-=pivot means-for: pivoting said link at one. localitifito apartmovablewith said trans-1. versely= movable: support, pivot TIIGBJ'lSiiOI pivoting said linkatzanotherlocalitinrmeans for'restrain-e ingxtransverse' :movementaof: s'aid: second-named pivot meanszand meanssoperatedwby: the longitue .35 dinal movement of thezicarriage for swinging said linku:

2. lnioombinationrra bed,:.a carriage; longitua dinalaguidea mean'szfor :guiding. said carriage for longitudinalamovementzrelative to the-.bed;a work support-ya :toolrr'supportpone10f said supports :1 being carried rbyitthei'icarriagexandwthe .othermf r1: saidasupports "being carriedsbyf the bed; transversew guidexme'ans for guiding: one i of said. supports: -for r transverse movement. relative -to theother :support,::a 'link,: pivot* means for pivoting-said linkv w at sone'localityitoa part-movable with said trans: s verselya movable isupport, rpivot yme'an's for. -;-pivot-: ingesai'd:- linka ati-another locality, means :for 7113-. straining. transverse movement" of said second; named zpivot-meangzmeans operated-by the longi: tudinalw movement 1 of the carriage {for "swinging said: linkyr' and :mea-nsmfor-zrenderingz sai'd last namedameans inoperative.--

3. Inrcombinatiomra bed,- a carriage, longitu- .7 dinal guide means ion-guiding .said' carriage sfor. longitudinal.movementrrelative to theibed; a work 1- supportz :a .tool rsupport, one tof said supportsbeing 2 carried by: the carriageand the 10t1'leI'.-"Of said. supportsrbeing; carried :byu the ::bed; trans-w verse guide .means:forrguidingponerof said sup-1- ports for-transverse movementrelative toithe others-support,- a link; pivot means for pivoting. said-.linkto a-partmovable :with said transversely movable support; pivot means; for 4 pivoting-said. link .:to a part .held' :fromvtransverse'. movement relative tosaid bedi'orproouring arcuate relative movement between thewwork,supportzand the. tool support"upon longitudinal movement. of the carriagerandt-meansrior' restraining movement :of saidili k to :preventrelative transverse movement: between .the --tool-.-supp ort rand W0l'k; support. 1

4. In combination; .za zbed ia carriage,;.ilongitudinal guide means for. "guiding said .carriagegfor 75 aaea azm support, a tool support. one .of said supports. be ing earriedrby-.the. carriagev and the. other. of said supports being -.-carried, by thebed, transverse;. guide'meansior guiding one of said supports for transverse movement relative to the other. sup-.

port, a link, .meansfor connecting saidlink to a part movable with said transversly movable.

support and to a part. held .from transverse movementerelative tothe bed, to procure arcuate rela-... tivermovement between...the Work supportv and thestool suppprt a secondilink, means for con-..

necting said second. link with a .part movable.

withsaid transversely movable support and with a part held fromtransverse movement relative to the bed. for procuring .other arcuate relative movement .between the work support and thetool; support.and..means. for-rendering one of said. links inoperative uponoperationof the other. of

said links;

longitudinal movement relative to the bed, a work guide meansfor guiding one of said supports for transverse movement relative'to the other sup-. port, a pair of links pivoted together, pivot means for pivoting one .ofsaid links to a part movable with said. transversely movablehsupport, pivot means for pivoting the other of said links to a. partimmovable. transverselyof the bed, and

means .for successively swinging said links...to

procure successive: arcuate .movement of the transversely movablesupport about different.

centers.

6. In c0mbination,:a bed, a carriage,v longitu-. dinal guide means for .guiding said carriagefor Y longitudinal movementrelative to the bed, a work support, a tool support, one of said supports be-- ing carried by thecarriage. and the other of said.

supports being carried: by the bed, transverse guide means for guiding one of said supports for transverse movement relative to the other sup 0 port, a pair. of links pivoted together, means for pivotingone of said links to a part movable with saidtmnsversely.movable. support, pivot means forpivoting the other of said links to a part im-,. movable transversely. of the bed, means for locking. said linksirom relative swinging movement and means for swing'ng the link assembly upon.

supports being earned by. the bed, transverse i guide means carried'by the carriage and guidingv one. of .said supports for transverse movement relative tothe. other support, a link pivoted to a part movable with said transversely. movable. support, a second link pivoted to .said. first link 1 and to a part. heldfrom. transverse movement relative'to thebed; means:for restraining relative swinging .;movement between said links, means for restraining relative longitudinal move-.

mentof the first named link at its locality of connectionto the second named-link.

8. In combination, a bed, a carriage, longitudinal [guide meansfor guiding said carriage for longitudinal movement relative to the bed, a work 1. support, a :tooltisupport, oneqof .said supports: being 1 carried by 1 the. carriage and: the. other .of said ;supports beingmcarried:;by::the;.bed;: .tIaDSLJ 5. In-.combination,.a bed,..a carriage, longitu-.. dinal/.guidemeans for guidingsaid carriage for verse guide means carried by the carriage and guiding one of said supports for transverse movement relative to the other support, a link, pivot means between one end of said link and a part movable with said transversely movable support, a member slidable along saidbed, pivot means for pivoting said link. at another locality to said member, means for locking said member from movement relative to the bed and means for locking said member from movement relativeto said carriage.

9. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a work support, a tool support, one of said supports being carried by the carriage and the other of said supports being carried by the bed, transverse guide means carried by the carriage and guiding one of said supports for transverse movement relative to the other support, a link, pivot means between one end of said link and a part movable with said transversely movable support, a member slidable along said bed, a second link, pivot means for pivoting said second link to said first link, pivot means for pivoting said second link to said member, locking means for locking said links from relative movement, locking means for locking said first named link from swinging movement relative to said carriage, locking means for locking said member from movement relative to the bed and locking means for locking said member from movement relative to said carriage.

10. In combination, a bed, a carriage, longi tudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a work support, a tool support, one of said supports being carried by the carriage and the other of said supports being carried by the bed, transverse guide means carried by the carriage and guiding one of said supports for transverse movement relative to the other support, a link, pivot means between one end of said link and a part movable with said transversely movable support, a member slidable along said bed, a second link, pivot means for pivoting said second link to said first link, pivot means for pivoting said second link to said member, locking means for locking said links from relative movement, locking means for locking said first named link from swinging movement relative to said carriage, locking means for locking said member from movement relative to the bed, locking means for locking said member from movement relative to said carriage, and means for operating said locking means in predetermined order.

11. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a work support, a tool support, one of said supports being carried by the carriage and the other of said supports being carried by the bed, transverse guide means carried by the carriage and guiding one of said supports for transverse movement relative to the other support, a link, pivot means between one end of said link and a part movable with said transversely movable support, a member slidable along said bed, a second link, pivot means for pivoting said second link to said first link, pivot means for pivoting said second link to said member, locking means for locking said links from relative movement, locking means for locking said first named link from swinging movement relative to said carriage, locking means for locking said member from movement relasupports being carried by the carriage and tive to the bed, locking means for locking said member from movement relative to said carriage and means operating upon longitudinal movement of the carriage for operating said locking means in predetermined order.'

12. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a work support, a tool support, one of said supports being carried by the carriage and the other of said supports being carried by the bed, transverse guide means for guiding one of said supports for transverse movement relative to the other support, means operable upon movement of the carriage toward the other support for procuring relative transverse movement between the work support and tool support, means movable upon reverse movement of the carriage to procure reverse transverse movement between the work support and the tool support and means operable at the end of the reverse movement of the carriage for taking up the slack occasioned in the reverse transverse movement between the work support and the tool support.

13. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a Work support, a tool support, one of said supports being carried by the carriage and the other of said supports being carried by the bed, transverse guide means for guiding one of said supports for transverse movement relative to the other support, a link for moving said transversely movable support, pivot means for pivoting said link at one locality to a part movable with said transversely movable support, pivot means for pivoting said link at another locality and means operated on occasion through movement of the carriage for locking said link from movement.

14. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a work support, a tool support, one of said supports being carried by the carriage and the other of said supports being carried by the bed, transverse guide means for guiding one of said supports for transverse movement relative to the other support, means for moving said transversely movable support transversely, means for looking said transversely movable support from transverse movement and means operated through lon gitudinal movement of the carriage for controlling the operation of said last two means.

15. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a work support, a tool support, one of said the other of said supports being carried by the bed, transverse guide means for guiding one of said supports for transverse movement relative to the other support, a link for moving said transversely movable support, pivot means for pivoting said link at one locality to a part movable with said transversely movable support, pivot means for pivoting said link at another locality, means operated through longitudinal movement of the carriage throughout a portion of the movement thereof for swinging said link and means operated throughout another portion of the movement of said carriage for restraining said link from movement.

16. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a

ports for transverse movement relative to the other support, a link, 'pivot means for pivoting said link at one locality to a part movable with said transversely movable support, pivot means for pivoting said link at another locality, means for guiding said last named'pivot means for movement in a direction differing from the direction of-movement of said transversely'mo'vable support and meansoperable .on occasion. for restraining said last named pivot means for movement in such direction.

17.- In combination, a bed, a carriage,-longitudinal guide means for guidingsaid carriage for longitudinal movement relative to the bed, a work support, a tool support, one of said supports being carried by the carriage andthe other of said supports being carried. by the bed, transverse guide means for guiding oneof [said supports for transverse movement relative to the other support, a link for moving said transversely movable support, pivot meansfor pivoting said link at one locality to a part movable with said transversely movable support,v asecond link pivoted to said first link,. pivot means for said second link and means operable on occasion for holding said second named pivot means' fixed relative to the carriage.

18. In combination, a bed, a carriage, longitudinal guide means. for guidingsaid. carriage for longitudinal movement relative to' the. bed, a Work support, a tool support, one of said supports being carried bythecarriage and the other of said supports being carried by the. bed, transverse guide means for guiding one ofv saidsupports for transverse movement relative to the other support, a link for. moving said transversely movable support, pivot means for pivoting said link at one locality to a part movable-withsaid transversely movable support, a "second link pivoted to said first" linkypivot' meansfor said second link and means operable on occasionfor holding said links from relative movement.

19. In combination, a bed, a carriage, longitudinal guide means for guiding said carriage for longitudinal movementrelative' to 'the'bed; a work support, a tool support, 'one'of said supports being carried bythe carriage and the other of said supports being carried'by' the bed, transverse guide means for guiding one ofsaid supports for transverse movement'rel'ative' to the other support, a link, pivot means for pivoting said link at one locality to a part movable with said transversely movable support, a second link of different length than said first link, means for pivoting said secondlink at one end to a part movable with said transversely movable support, means for pivoting said links at other'localities to a part fixed relative to the bed, and means for rendering either of said links operable tomove said transversely movable support.

"20. In combination, a bed, a carriageplongitudinal guide means for guiding said carriage for longitudinal movement relative to the bed, a work support, a tool support; one of said'supports being carried by thecarriage andthe other of said supports being carried by the'bedytransverse guide means for guiding one of said-supports for transverse movement relative to'the' other support, a link, pivot means for pivoting said link at one locality to a part movable with said 'transversely movable support, a second link extending in the opposite .direction'irom' the first link,

means for pivoting said second link atone end to I a part movable with said transverselymovable WILLIAM H? HENDEL. 

